Locking-valve for fuel-oil tanks.



'w. H; SMITH. LOQKING' VALVE FOBQFUBLY OIL TANKS.

APPLICATION FILED AIL-22, 1913.

atented Jan. 12, 1915.

MFA/E5555 THE NORRIS PETERS 60., PHOTO-LlTHQ, WASHINGTON. D. C.

WILLIAM- H. S1V.[IT'H,..OF..CLEVELAND,.;QHI,O.

LOOKINGEVALVE FOR FUEL OIIE' TANKS! Specification of Letters Patent; Patntedflan igxiglfi;

01-igina1sapp1ication'filedmecemberifil,21910;.Serial No..60.0,3,55.;-.- Dilvided anmthis;application;filed;Aprilg 22, :1913..- Serial No,-l762;909.wi

To allevhom it may. concern Be, it known that I, WrLLrAM andnseful Improvement in Locking-Valves fonFuel-Oil Tanks, ofwvhich thel following. is a full, clear, and exactv desCripti0n,.,refer-. ence beinghad to.:the..accoinpany1ng draw.

ingsz This inventionrelatesto valves and has. for,.its. particular, object. the provisionof a valve. or cook of the. turning-plug type that, shall. ,be. particularly suitable. for use in con-.z

nection. with. liquid ,1 storage 1 and delivery tanks character -,hawing. simple. and. rugged locking 1910,. Ser. No.,. 600,355.

One embodiment; of my, invention .is illus-.

trated in the accompanying... drawings, wherein-.-

Figure 1 is-a side elevation. of a complete valve-With .theplugs-in off or. closed position,, and Fig, 2 is a plan-view of the valve also. showing. theparts inelosed position:

Describing. the: .parts. byv referencecharacters, 1 representsthebody :of the-valve, 2 the dischargespout, 3 the pail receiving, lug carried by the-discharge spout, and. d the.- socket by meansof whichthe valve may be attached to the outlet pipe ornipple 5 ofa tank orv the like 6.

Rotatablymounted in a suitable seat.with.- in the body 1 is a valve plug? secured in,

place vin any convenient manner as by the nut ,8 and Washer 9. Theupper. end of thls plngis formed. witha prismaticstud 10 for therreceptionaof .a removable wvrench 11 wherebythe-plug may be turned- The plug may. also, if desired, be formedwith a laterally projecting perforated lug-12 adaptedto register With a similarlug (not shown) cars ried-by thecasing to permit thepermanent locking of thevalve by meansofa padlock or. similar device.,..Stop pins 13 are alsocar-m ried by the casing: and cooperate with .a suit-.-..

able .part of the valve plug,.such as thepro- H..SMITH,,. a citizen of. the United. States, residing at; Cleveland, in;the..county. 0f.,Cuyahoga,- and. State of Ohio, have invented a certain new More specifically theobjzectsaof the. inven.-.. tion are the provision of a device..of th1s..

j ection .12, to. limit. the, turning -moyementof; the; valve, as .maydoe desiredgathe, movement l of. ninety, .degreesherein shown zbeing; sufiim efiicacious, it is. inconvenient .to employ-gsuch a lock. during the'day, time when. it is desired frequently. to. i open. the. :valve ..for -;.-the lWith-I drawal. .,of..liqui;d as. .awhen. the; same. is. used upon a delivery agon- At .the .same. time it llS- desirable. thatusome Fmeans should .be

against-taccidentah opening owing .;;to' the jai -ring, and "vibrationltoiwhich it'll ls Sllbr je'cted. 1., My; prefenredtexpedi ent'; 'consistsmf a .hook or .latch ,l5. pi;voted-upon .a -boss-16, formed onthe side of -.the-.' turning plug,- the-.- latch being g seeuredthereon in any-convene ient mannermas..by,,-tl1e,.screw .17. The. for.- wardly extending portion, of. this latch is flattened. easeiatlrlfilrto forma finger piece, .and the rearwardly extending portionwismade. of Avedgemr zcamehape as shown at .19. I Be tween.-.-the,rpiyotwandi the finger piece, :the lower. surface of [the/latch is 1 providedwvi-th a hook-shapedprojection. x20 the inner face of -,Whi'chsubstantially. follows the arc. of a circle ofwhich the;pi vot. is.the;center. This projectionengagestheroundedfrontaend of a horizontally. proj ecting- ,arcnateplate or ledge 21 carried-by the stopcock-easing. The upper face. of thisi ledge is upwardly slanted inearr.

j like. locking ,ameans: to. preventrthel turning; I

prov dedfoiuautomatlcally loclnng theplug.

its front edge to 1 form .an. inclined plane 22. I

The handle 11 of the stop. ,cock. is shown in fulhlines inaFig. l and, in. dottedwlines in Fig-.2, and.may,;.of course, .be. applied to the boss.10 in anyone-ofpfour positions,.but is preferably appliediso as to .be. parallel with;

thelatch 115} and ,permit. thatlatch to be 0peratedby. the. fingers: of the; hand that soperates .the. stop. :cock. It. will ,be noted. that when =the..latchv is raised the hook .20: moves upwardly and forwardly about. the pivot 17 but cannotbe raised high enongh; to clear. the. .end of the ledge. 21 owing. .to the engage.. ment. 1 of. the farther. end :of the latch With the. inclined .plane. 22.: It does,..however, move. away from. the end ,ofthat ledgefar enough .to permit: some. ,.-movement of the. plug,,.whic.h bringstherear end of. the latch to a lower portionofthe inclined plane, thus permitting the hook to be raised yet higher and finally permitting it to clear the ledge entirely. The angle of rotation of the plug is limited by the engagement of the lug 12 with the stop pin 1313, or by similar suitable means. The angular extent of the ledge 21 is not less than this amount, so that the latch may be positively held from jarring or falling out of operative position and requiring the time and attention of the attendant to keep it in working condition. Upon closing the cook, the hook 20 rides upon the ledge until it clears the end there' of, whereupon the contact of the inclined plane 22 with the rear end 19 of the latch causes the hook to be positively forced downwardly toward locking position. The unbalanced condition of the hook causes it to keep its locking position under the action of gravity and permits the omission of all springs, while the interaction of the inclined plane and the rear portion of the latch gives the latch a positive impulse toward locking position and overcomes any tendency to stick such as is sometimes apparent in cold weather. Also it will be seen that the raising of the latch and the turning of the plug must take place simultaneously, the raising of the same being elfected by the finger piece 18, and the turning by the handle 11. When the valve is closed the handle will ordinarily be removed, thereby rendering very diflicult the turning of the valve and minimizing the purloining of liquid.

Having thus described my invention what I claim is 1. In a turning plug stop cook, the combination, With the turning plug and its casing, the axis of said plug being substantially vertical, of an arcuate ledge carried by said casing-andhaving an abrupt end, the upper surface of said ledge being upwardly inclined adjacent to said end, and a latch pivoted to the turning plug and having a downwardly turned hook portion adapted to engage-the end of said ledge to lock said plug in closed position, said latch having a portion upon the other side of its pivot from said hook portion and adapted to engage said inclined surface when said plug is moved to closed position, whereby said latch is positively moved to locking position.

2. In a turningplug stop cock, the combination, with the turning plug and its casing, of a shouldered projection carried by said casing, and a latch pivoted to said turning plug adjacent to said projection, said latch having a hook on one side of its pivot adapted to engage the shoulder of said projection to lock said turning plug in closed position and also having an extension on the other side of its pivot adapted to engage said projection when said plug has been moved nearly to closed position and move said hook to locking position.

portion adjacent said shoulder, and a latch pivoted to said turning plug adjacent said ledge, said latch having an extension on one side of its pivot adapted to ride along the top of said ledge, and a hook at the other side of said pivot and adapted to engage said shoulder, the relative dimensions of said extension and of said inclined portion being such as to'prevent complete raising of said latch except in connection with the turning of the plug.

4:. In a turning-plug stop-cock, the combination, with the turning plug and its casing, of means for limiting the angular movement of said plug, a ledge carried by said casing and having an angular extent not less than that of the angular movement of the plug, said ledge having an abrupt shoulder at one end, and a latch pivoted to said plug adjacent said ledge and having an extension on each side of its pivot adapted to ride on said ledge, one of said extensions being hook-shaped for locking cooperation with said shoulder.

5. In a turning-plug stop-cock, the combination, with the turning-plug and its casing, said casing having a projection, of a gravity-operated latch pivoted to said turning plug and adapted to engage said projection, and means carried by said casing and cooperating with said latch for positively moving said latch into engaging position upon the movement of said turning plug to close the stop-cock.

6. In a valve, the combination, with a casing and a rotatable member in said casing and controlling the passageway therethrough, of a positive locking device pivoted to said rotatable member and having a finger piece projecting radially therefrom, means preventing the disengagement of said locking device from said casing excepting simultaneously with the rotation of said movable member, and a detachable handle adapted to be applied to said movable member and to project radially therefrom adj acent to said locking device whereby said member may be turned.

7. In a valve, the combination, with a casing and a rotatable member in said casing and controlling the passageway therethrough, of a locking device pivoted to said rotatable member upon an axis transverse to the axis of said member and having a finger piece projecting radially therefrom,

hook means carried by said locking device and engaging said casing when said device is depressed, other means carried by said locking device and preventing the disengagement of said hook from said casing excepting simultaneously with the rotation of said movable member, and a detachable han- In testimony whereof, I hereunto afiix my dle adapted to be applied to said movable signature in the presence of two Witnesses. member and to project radially therefrom adjacent to and above said locking device, WILLIAM SMITH said handle serving as a means for turning Witnesses:

said member and as a brace for the operation BRENNAN B. WEST,

of said locking device. HAROLD E. SMITH.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of ratents,

Washington, D. G. 

